In a pinch, a run-of-the-mill soda can can be used to make a decent single-hitter.
Push a small indention into the can near the bottom, opposit the tab-side. Using a knife, poke a couple of small holes into the aluminum in the indention. Fill, light, draw from tab opening. Viola... you're... umm... hungry... need... eyedrops... errr, what was I talking about?
I'm mean because you're stupid.